Loop-taker mechanism for sewing-machines.



G. M. HORTON. LOOP TAKER MEGHANXSM POR` SEWING MACHINES.

APPLIGATION FILED 0GT.9,1909.

Patented Aug. 18, 1914J TTOHNE Y 2 SHEETS-SHEBT l.

.of New Jersey,

emitan smiles frajrnur clarion.

,cinemas M. Hoeren, or ELIZABETH, NEW JERSEY, AssIeNon '.ro THE smsen MANUFACTURING COMPANY, A CORPORATION 0F NEW JERSEY.

Loon-manna MECHANISM `Fon SEWINGMACHINES,

memos..

'Specification of Letters Patent. Application tiled October 9, 1909. Serial No. 521,815.

To t@ whom 'it may concern:

Bfelit known that l, CHARuis M. Hon'roN, a'citizen of the United States, residing at Elizabeth, in the county of Union and State have invented certain new and useful Improvements in Loop Taker Mechanisms for SeWing-MaChines, of which the following is a specification, reference being had therein to the accompanying draw- 7 ings.

This invention relates to an improvement in that classof sewing machlnes comprislng a reciprocating needle to which is imparted lateral jogging movements, either successively as in the production of buttonhole or overseam stitching, or at intervals, as in certain classes of embroidery work, combined with a loop-taker moving in a path substantially parallel at the loop-seizing pry sition With the plane of'lateral movement of the needleiiwherehy needle-thread loops are seized and concatenated with other needlethread loops, or with a lower thread or threads; and it has for its object to insure a uniform relation of the needle and looptaker at the time the latter seizes thread loops from 'the former, so as to insure the effective operation of the' stitch-forming mechanism.

ln its preferred embodiment, the improve nient is appliedto an oscillating shuttle machinein which the shuttle-actuating shaft has loosely"mounted` thereon a sleeve provided' with the usual actuating means` connected'with the main-shaft for imparting thereto' oscillatory movements of the amplitude normally required for the shuttle movements, this sleevey having fulcrunied thereonanangul'ar lever one arm'of which is pivotally connected with a ixed collar upon the shuttle-iutiuiting shaft, while the extremity of the other arm oi said lever is confined Within a movahly mounted racewayI adapted to be tilted hy :i connection with the swinging needle-Trame infwhich the needle# har is"jourm\l( fd to reciprocate.l

In the :mcomp'anying drawings, Figure 1 is` asectional side elevation of aSinger zigzag toed-uplthe-a'rxn machine embodying the present improvmnents, Fig. 2a plan ot the same withthe bracket-arm partly insee-' tion at the center ofthe'main-shafhand Fig. f3 an elevation of the front end of the machine. Fig. 4 is a transverse sectional elevation, upon a larger scale, `through the upright portion of the bracket-arm, looking forwardly. Fig; r5 is a perspective view', ilpon a still larger scale, of the principal part of the shuttle-actuating mechanism, and Fig. 6 a perspective vievv of a portion of said mechanism. l

As herein represented, the `frame of the machine comprises the base 1 from which extends laterally the cylindrical liorn"'or Work-supporting Aarm 2, and fro'm which Patented Angie, iota.

rises the`hollow standard v3. offthe lhracliet-hy arm formed With the horizontal tubular por?r tion 4 overhanghig the yhorn 2 and terminat-v ing at' the forward end inthe head 5. The ma1n-sl1`aft' 6 is journaled as usual vin the overhanging arm 4 and carriesl the balance.4

Wheel 7 and belt-Wheel 8.

Upon'the alined fulcrum=p1ns 9 lan'dlO` within the head 5 is journaled the svifinging.-l`

needle .frame 1l in which igmonnted the 'needle-bar 12 'carrying the yneed'le v13,' fthe needlehar deriving its vertical reciproca?` tory movements from a'crank-pin on the( cam-cy1inde`14t, fixed upon the fori "ard end-1 of th'emain-shaft, throughI thelink 15, in a 'Well-known manner. 'i

geo,

The. needle-framell 'has forked luglio to' which is secured by a; universal j'oint con-V nection one end of a rod 17` Whose) opposite y,

end is adjustably connected vby meansof a clamp-screw. 18 .with the grooved segmental,

19' fulorumed rat 2O upon` the arrnf joglever 4, and having a stud 2 1 entering the 'groove 2Q of the cam-cylinder 23 ljou-rnaled upon'a screw-stud 24 and having upouits rearward face y,a bevel-gear meshing with. and, driven hy means of, the smaller bevelg-wheel 9.6 fixed u )on the main-shaft u.' fl`he-proport-ions o lthe hevelwheels 25 andQG and the form of thecam-groove-22 arelsuch that tlieneedle-frame 1l -anamnesi opposite exrl treme ,positions for each slumsive lh rustv oi' the needle, as is usual in this classo'fhla.-

The main-shaft?) isprovided with assecond bevel-wheel 27 Vmeshingfwith asimilar `,Wheel 28 fixed upon the inner end verse 'shaft 29 which is -mounted in loosev 30 upon thefront side 4, thistransverse shaft carrying the;l hand `in. handling the machine.

lnl the production ol" stitches, `the needle ino,

heel 3l which is provided for vconvenience.l

drawl supportin are alternat the ,sh

means ofthe 'screw 43 and `slide-block is em v45 of a rockl, upon a sleeve pin 48 fixed i i allelwith the tending `arm 4 pin 50 embrae A man-rod lfwhos with a strap 52y -crank 53 in the rea main-shaf mediate ic and -pivoted upc needle-.iframe 11."

amelshaped llate within a of the vvorkration ofthe of the *shuttlev e tivo horns of 35 fixed upon the forward uttle-'actuating rock-shaft 36 aled in suitable bearings `Witl1-V supporting horn. of the rock-shaft 36 y a forked lug 38 and with on which is m vided with the c uttle-driver end of tlie sii which is journ in the Work# rearward end lar 37 formed a tubular hub 39 u loose sleeve 40 pro 41. The arm 41 has a crankpin which` carries'y the slide-block 42 conti ned thereon by,

The described connection Vwith the needle"v frame of the raceway again 64 causes the latter,- Which' is normally'in upright position with its raccway 63 in agilane perpendicular to the loop-taker rock-s aft 36, to be tilted slightly out of normal position for each alof the needle. When' the racewafy 63l is in normal upright position, the rocking of the ysleeve 40 by lts connection with the actuating crank 53 ofthe main-shaft causes the exmove in'a. plane.. perpendicular to the roekshaf/ t/BG, the forked lug 38 of the collar 37 being constantly propelled by the other arm 56 of said angle-lever in fixed relation with fthe crank-arm 41 ofthe sleeve40. When,

Washerj44, which' the forked armlever whose' hub 46 is secured however, the raceway arm 64 assumes its inclmed position corresponding,y with the other 47-mounted upon the fulcrumthe base 1 of the lmachine parshaft 36. 'An 'oppositely ex- 9 of the vrock-liever carries a the'A lower/end of apitopposite ,end is provided embracing an actuating rvvardy end portion of they t 6, from which, With the" intcronne'ctions above.;` rocking sleeve 40 `derive ,movements., A Upon-,- the yrad v. lbythe rocking `55 ofan angleleach provided respectively, the hub `its st udby' means of yball 5,8 is fitted -a sock block 61 which is in tu in the forked lug 38 ofL f Upon y the vball divided andsock a racev'vay 6 hub v has the planeof. conical center-,screw extremity. Ajt the otherY 'is allu'g `68 similarl center-screw socket with'fthe socket 67, tered by the points '71, f respectively, Fired .upon' the 'tendingv crank# per` end a' screwfpin 73` upo ed a block 74 extremity of brating lever fixed screw-stud 7 7 and h tending,` arm v7 8l to vvhic nected oneend ofla pltrn posite` end has a forked'h desf'zrib'ed, the s uniform oscillatory ial Yfulcrurn-stud'54 carried sleeve 40`isf mounted the hub leverfhaving arms 56 and 57 a ball-stud, 58 and 59 55 being` confined upon the screw 60. To` the t in the divided slidern'iitte'd to th the fixed coll 4 -studz59is fitted a second eted slide-block 6 3 .in a segmental arm projecting in' one direction, in"

' ay 63,- a'studGGWith ket 67 in its outer end of the hub/65' y formed with a conical 69 arranged'in alinement these sockets being enof center-'screw -lmounted inthe 'stud 66y is an upwardly 'exying' upon its up-v n which is'mountentering a fork 7 5 inthe lower the depending arm 76 of a vifulcrumedupon a asf an upwardly einv h is pivotally`l con- -rod 79 Whose opead80 embracing arr'nv 72 earr llever 56 57 is turned slightly uponjits j ul Crum-stud 54 so as tochange the relative positionsof the forked lug 38.and cranioarmi41, the loop-taker point being*l advanced correspondingly with the amplitudeof lateral' movement olf the needle. The shift of the raceway arm- 64 kfrom one to the other of its extreme positions beingeleeted with the lateral movement of the .needle-frame 11 while the needle is in upper position andthe, Ashuttle is in east-olf .posit-ion, thefslide-bloek 62 is at such time in its lower positoznnem.

tion-of they arm64 isnot suiiicientto apprefrom cast-off osition to loo -takin l tion, the angleI-)lever arm 57 ijvithltitgsieblock 62 assumes-a position' above the rock shaft 3G Where it receives its greatest eeet from the raceway 63, and hence the pseizing position -of the' shuttlespoint is changed correspondingly. with the lateral ositions of the needle, 'so that the loop-taker cooperates with the needle-under precisely sition's, regardless of the amplitude, of jog of the needle. .It will. bevobserved" that by changing` the adjustment iof the needle-l frame engaging rod17`with the vibrating needle movement .crosswise of the horn 2; :'may lbe varied, the operation ,of the shuttle [movement compensatlng devlceberng simia connection withy the needle-frame From the above description of the opera-y tion of this mechanism, 1t will be seen that theadvance and recession of the initial position el 'he loop-taker point as it is about to' commence its operative 4movenient causes the relative positions of the needle-eye .and

n a `lateral lug 81` of the polnt of the loop-taker in every case seizing eXtreme positionof. the needle, the an leciablyA change the cast-off position of the shuttle, but as the shuttle mechanism recedes i looper point to maintain a ixed relation, the 1 ternate stitch cor1espon'ding .with the jogtremity ofthe arm 57 of the angle-lever/to" l est the .axis of oscillation of the hub 466,' and so near such axis that the slight tilting mo- '11o the same conditions in each of its lateral po- 116 f segment-lever"19, the amplitude ofv lateral y 120 larly effected, as the latter is actuated fromr y I A lo interpoeed between its upper benringr and n `iited -rollnr 84 thereon und vcarrying the presser-foot 85 opposed to the feed-dog 86 ,nliixed to the orwnrd end of the feed-bnr 87 und having n pressure spring 8S resting,lr

upon the under side of the throat-plete Si).

4having.; e renrw AThe feed-ber is pivotnlly connected et its rearward end with en upward] y extending lerm 90v of` l1.,,transverse rock-shaft 9,1 jonrn zried 1n the bese l of the mnchine frame und y nrdly extending :1i-.|1192 with ai universel Joint eonnertion withthe lower "end ofthe link-bor 93l formed nt ite` upper eidwith n yoke 94 embrncingvthe trinngulml` feed-netnoting` com 495 upon the main-shaft.

"lhe"1inkbnr,lies in its yoked portion n stud f feupp'ortng link 97 196 embraced ley-one end of n link 9T whose opposite end le fnlernmed upon n screw-stud 08 upon the depending erm 99 ol the feed- 1'e nlntor :ingledever-having n fixed fulrrmn f et 'the Junction of its nrms nndprovnled with the lnterel erm 100 by which it is shifted in nI Well-known manner to change the position of the. iinlerum-stud 98 of the #for thc link-bnr 93 for determining the extent ol" upnnd-down movementof this;y enm-eontrolled member in communicating through the connections nbove desrribed the -reeiproentory move-` ments of the feed-bar 87. f

y, The shank. of the feed-dog 8G rests upon the top ofnyoked slide 101 to which rising end telling movements nre imported by n` euitnbly formed eem 102 upon the shuttlevactuating rock-shaft 36.

A'The tension` deviee 103' may be of any usnnl orsuitnble construction,nsnlso the tithe-np 104'7Whieh is herein shown compris l ing :t lever actuated from the eem-groove 14* o the cam-cylinder 14.

Honing thueeet forth the nntureof the inyentfion, w-hnt Ik Gleim herein ist- 1. in n sewing machine, the eon'ibinntion with. the looprt ker, of nctuntingmenne therefor, ycontrol ing menne interposed between Seid loop-tnker end its actuating stitch-forming lcycles,

menne nnd adopted to reuse the loop-tn|wr to move et one speed between loop-seizing nud enst-ell positions in one slitrh-iorming cycle .eurrecding Stitch-forming eyele while meintnining e substantially uniform cast-oil' position for all stitclrforming cycles, and n take-up Cooperating with Suid lmotnker nt the common rest-oil' position in consecutive whereby the release and at n different speed in the next :md drawing np of nllNthreed-loops eeized, and dietended by the loop-taker will be eli-- leeled under the seme eoinlilione.`

SZ. ln n sewing' machine, the combi with n loop-taker, of uniformly noting` 'for imparting thereto tonnel-tro epernl' movements, and means for vnrying the length of traverse of said loop-tener toward und from e snbstnntinlly fixed limit.,

2l. In n Sewing' n'niehine, the eombinnlion with a, reciprocating and leternlly movable needle, n loop-tnl er, and needle-rrripr mit ing` :ind loop-teker actuating menneJ :nlnpted lo ellect the cooperation of the looptaker with the needle in the seme stage of the lntler`s reeiprocntory movements in enrh stitch-forming; operation, of menne een trolled in its degree of notion by the interni position of the needle :1nd ndnpled to iin-- l'onmtieelly very the length of traverse olf.' the loop-taker between loop-seizing poeition.

und n rnetolli position whith ieeubstnntielly fixed;

l. ln n .eewmg'mnt-lnne, the romlnnntion with o reriprornting und lnternlly' movnble needle, n looplnler Confined to movement .in n fixed plane, n takenp, :vnl needle-reriprorntiner and take-up ncinntine"menne, ofnn'tuntineY menne for importing' te' the loop-linker 1oop-seizing movements, n connection between enidloop-tnlte"end its nw hint-ing ineens whereby (he loop-biker is rnusied to assume n- Snbetnntinlly uniform rust-off position as the tnl e-up begins to perform enclr thread-drowing: nrtioe, und menus ndnptedto control the loop-srizing movements of the loop-taker to maintain n enbstnutinlly unil'orml lcopieiz`ng 'position of the hum-taker relatively to 'the needle correspondingly with the latterel interni pw .itions in consecutive Stitch-forming operations',

5. In n sewing machine, the combination with a needle, menne for imparting thereto 'rw-,ipromting movements, and ineens for impnrtingto' Huid needle lateral jogging 1no\'einente,ol n reeiprorntory loop-tnl er, n Shaft lor communicating operative movements thereto, n driving'elcment loosely mounted on enidishnft, actuating menne lier' importing uniform `'op'f-nnt-ive movemente' te :mid driving element, e ronneetien between seid drivingr elenient land 'seid shaft, und

monti-olling *menne noting upon seid con# nei-lion leynrbrononely with the needlejog- ,ging menus for vnryine,r the position of Seid drivingr element npon :ind relatively to said shnlt.

(l. ln e sewing machine, the combination with n needle, reciproeating means therefor und jogging means therefor, of a circnlerly moving loop-taker, a she't for commnnioet ing operative movements thereto, n driving element loosely mounted upon und adapte to turn independently of said shaft, actuatien lll@

, upon said connection synehronousl ing means for imparting to said driving element circular operativel movements, a ,con-

nection between said driving element and said shaft, and controlling means. acting with the needle-j ogging means whereby 'sind driving element is shifted 'relatively' to said shaft. f i

; 7.- In asewing machine, l'the combination with-a needle, reciprocating means therefor an .f 'ogging means therefor, of a circularly n10,l loop-taker, a shaft for communicatingoperative movements element looselymounted on 'said shaft, ac-

inJ tuating means-for imparting to said driving with a. needle,

.. movingl loop-taker, v ing operative'movementsthereto, a `driving element circular operative. movements, a

vrocking-member inountedupon said driving element and connected with said shaft and provided with a lateral arm, a reciprocatory l2,02 member formed with azracevvay embracing element loosely mounted onv said shaft, ae-

tuating means for imparting to said driving yat.

element circular operaltive movements, a rocking member mounted upon sa al drivin element and` connected withA said shaft an ,provdedwi-thfa lateral arm, a reciprocatory member formedl withairaceway embracin said lateral arm of the rocking member an fulcrumed to tilt upon an'axisv substantially.

in theplane of and adjacent one side of said raceway, and'means acting upon said re: ciproe'atory member needle-jogging movements thereto ,in controlling therelation of said shaft with'the driving element thereon. j

9. In a sewing machine, the combination with a needle, reciprocating'means therefor and jogging means. therefor, of -a circularly moving loop-takerga shaft-,for communicating operative moyementsjthereto, a sleeve loosely mounted upon said shaftand provided with a radial fulcrum-stud, actuating means for imparting to said sleeve circular operative movements, a rockingmember mounted upon slid jfulcrum-stud and having` a positive connectlipn Awith s aid shaft and av lateral arm in angular relation therewith, a

thereto, a driving' tilting arm lformed with ing t 1e and of said raceway and. transverse to theloop vtaker shaft,v and means connected with :the needle-jogging means for tilting the raceway arm i f' 10. In a sewing machine, the combination with a needle, and `jo ging means there or jor ,an oscil` latory oop-taker, a ,rock-shait f for f' communicating o ,sleev'e loose ,and provided with actuating means for circular operative lever mounted upon collar mounted upon a vradial 4fulcrum-simd, imparting to said sleeve movements, an" an lesaidrock-shaft Vand .a racevvafv lembi-'ac lateral arm of sind rocking member'. movable upon an axis adjacent one slde' reciprocati meanstherefor erative movements thereto, a y mounted upon saidl rock-shaftv provided with a lugo'peratively connected with one armof ari`nformed with a bracing another arln mounted for movement, jacent voneside ofsaid p connected withv the needle-jogging'means for tilting .the rneway arm'.` v

' ental f raceway ernsaid j 11. In asewing machine, the comb,inationl 1 reciprocating means therefor and jogg'in .means therefor, oan. oscillagr lalienta.,rock-shaft for communi.- f p loose y mounted .upon said: rock-.shaftf-and* l vprovided with a radial fulcrum-stud, actu,

with a needle,

tory loop-ta reatin operative movements thereto, a sleeve ating means `foriinpartingl to said sleeve cirsald `aigle-lever, a tilting angle-lever andre' l vupon` an lan`s|-ad raceway, andi means i.

ss n

cular operative movements,'an angle-lever' mounted .upon said fulcrum-stud, acollar with a lug operativelyjconnected with one arm of said angle-lever,

name to. this: specicatiomin the presence,

L,ll'oinmin JgAcKEn.

'a tilting arm formed with a segmental raccwavembracf'` ing4 another armv of lsaidf Iangle-lever. and ninnt'dffilfor movement upon anA axisfadsynchronouslywith the;

meansl for imparting` tilting f Lnsjnrionivon.)

mounted upon said rock-shatand provided t lever Pand a conlfleve'r and 

